公开(公告)号：US08836443B2

公开(公告)日：2014-09-16

申请号：US13617347

申请日：2012-09-14

申请人： Weiqi Ding ,  Sergey Shumarayev ,  Wilson Wong ,  Ali Atesoglu ,  Sharat Babu Ippili

发明人： Weiqi Ding ,  Sergey Shumarayev ,  Wilson Wong ,  Ali Atesoglu ,  Sharat Babu Ippili

IPC分类号： H01L23/66 ,  H03B5/08 ,  H03C3/22 ,  H01F27/29 ,  H03B5/12 ,  H01F27/28 ,  H01F21/12

CPC分类号： H03B5/1212 ,  H01F2021/125 ,  H01F2027/2809 ,  H01L2924/0002 ,  H03B5/1243 ,  H03B5/1268 ,  H01L2924/00

摘要： Integrated circuits with phase-locked loops are provided. Phase-locked loops may include an oscillator, a phase-frequency detector, a charge pump, a loop filter, a voltage-controlled oscillator, and a programmable divider. The voltage-controlled oscillator may include multiple inductors, an oscillator circuit, and a buffer circuit. A selected one of the multiple inductors may be actively connected to the oscillator circuit. The voltage-controlled oscillators may have multiple oscillator circuits. Each oscillator circuit may be connected to a respective inductor, may include a varactor, and may be powered by a respective voltage regulator. Each oscillator circuit may be coupled to a respective input transistor pair in the buffer circuit through associated coupling capacitors. A selected one of the oscillator circuits may be turned on during normal operation by supplying a high voltage to the selected one of the oscillator circuit and by supply a ground voltage to the remaining oscillator circuits.

摘要翻译： 提供具有锁相环的集成电路。 锁相环可以包括振荡器，相位频率检测器，电荷泵，环路滤波器，压控振荡器和可编程分频器。 压控振荡器可以包括多个电感器，振荡器电路和缓冲电路。 多个电感器中选择的一个可以主动地连接到振荡器电路。 压控振荡器可以具有多个振荡器电路。 每个振荡器电路可以连接到相应的电感器，可以包括变容二极管，并且可以由相应的电压调节器供电。 每个振荡器电路可以通过相关联的耦合电容器耦合到缓冲电路中的相应输入晶体管对。 所选择的一个振荡器电路可以在正常操作期间通过向所选振荡器电路中的一个提供高电压并且向剩余的振荡器电路提供接地电压而导通。

公开(公告)号：US08502613B2

公开(公告)日：2013-08-06

申请号：US13170860

申请日：2011-06-28

申请人： Ping-Ying Wang ,  Hsiang-Hui Chang

发明人： Ping-Ying Wang ,  Hsiang-Hui Chang

IPC分类号： H03L7/085 ,  H03C3/22

CPC分类号： H03L7/099 ,  H03L7/16

摘要： An oscillating circuit including a digital sigma-delta modulator and a controlled oscillator is disclosed. The digital sigma-delta modulator receives a fractional bit signal to generate a control signal. The controlled oscillator includes a varactor dynamically coupled to receive the control signal.

摘要翻译： 公开了一种包括数字Σ-Δ调制器和受控振荡器的振荡电路。 数字Σ-Δ调制器接收分数位信号以产生控制信号。 受控振荡器包括动态耦合以接收控制信号的变容二极管。

公开(公告)号：US08253506B2

公开(公告)日：2012-08-28

申请号：US12897918

申请日：2010-10-05

申请人： Li Liu ,  Chiewcharn Narathong

发明人： Li Liu ,  Chiewcharn Narathong

IPC分类号： H03C3/22 ,  H03L1/02

CPC分类号： H03L1/025 ,  H03B5/04 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1265 ,  H03L1/023 ,  H03L7/099 ,  H03L7/104 ,  H03L7/1976

摘要： A resonator of a VCO includes a fine tuning main varactor circuit, an auxiliary varactor circuit, and a coarse tuning capacitor bank circuit coupled in parallel with an inductance. The main varactor circuit includes a plurality of circuit portions that can be separately disabled. Within each circuit portion is a multiplexing circuit that supplies a selectable one of either a fine tuning control signal (FTAVCS) or a temperature compensation control signal (TCAVCS) onto a varactor control node within the circuit portion. If the circuit portion is enabled then the FTAVCS is supplied onto the control node so that the circuit portion is used for fine tuning. If the circuit portion is disabled then the TCAVCS is supplied onto the control node so that the circuit portion is used to combat VCO frequency drift as a function of temperature. How the voltage of the TCAVCS varies with temperature is digitally programmable.

摘要翻译： VCO的谐振器包括微调主变容二极管电路，辅助变容二极管电路和与电感并联耦合的粗调电容器组电路。 主变容二极管包括多个电路部分，其可以单独禁用。 在每个电路部分内是多路复用电路，其将微调控制信号（FTAVCS）或温度补偿控制信号（TCAVCS）中的可选择的一个提供到电路部分内的变容二极管控制节点上。 如果电路部分被使能，则FTAVCS被提供到控制节点上，使得电路部分被用于微调。 如果电路部分被禁用，则TCAVCS被提供到控制节点上，使得电路部分用于抵抗作为温度的函数的VCO频率漂移。 TCAVCS的电压如何随温度而变化是可数字编程的。

公开(公告)号：US20120086492A1

公开(公告)日：2012-04-12

申请号：US12961236

申请日：2010-12-06

申请人： Han Henry Sun ,  Kuang-Tsan Wu

发明人： Han Henry Sun ,  Kuang-Tsan Wu

IPC分类号： H03K3/00 ,  H03C3/22 ,  G06G7/16

CPC分类号： H04B10/6161 ,  H03D13/00 ,  H04B10/6165

摘要： Consistent with an aspect of the present disclosure, an optical signal carrying data or information is supplied to photodetector circuitry that generates a corresponding analog signal. The analog signal may be amplified or otherwise processed and supplied to analog-to-digital conversion (ADC) circuitry, which samples the analog signal to provide a plurality of digital signals or samples. The timing of such sampling is in accordance with a clock signal supplied to the ADC circuitry. A phase detector is provided that detects and adjust the clock signal to have a desired phase based on frequency domain data that is output from a Fast Fourier transform (FFT) circuit that receives the digital samples. Preferably, the phase detector circuit is configured such that it need not receive all the frequency domain data output from the FFT at any given time in order to determine the clock phase. Rather, a subset of such data is supplied to the phase detector circuit, such that the phase detector has a simpler design, operates faster, and is computationally efficient.

摘要翻译： 根据本公开的一个方面，携带数据或信息的光学信号被提供给生成对应的模拟信号的光电检测器电路。 模拟信号可以被放大或以其他方式处理并提供给模数转换（ADC）电路，模数转换（ADC）电路对模拟信号进行采样以提供多个数字信号或采样。 这种采样的时序与提供给ADC电路的时钟信号一致。 提供了相位检测器，其基于从接收数字样本的快速傅立叶变换（FFT）电路输出的频域数据，检测并调整时钟信号以具有期望的相位。 优选地，相位检测器电路被配置为使得其在任何给定时间不需要接收从FFT输出的所有频域数据，以便确定时钟相位。 相反，这种数据的子集被提供给相位检测器电路，使得相位检测器具有更简单的设计，更快地操作并且在计算上是有效的。

公开(公告)号：US08115558B2

公开(公告)日：2012-02-14

申请号：US12726474

申请日：2010-03-18

申请人： Yuki Tsuda ,  Hideaki Masuoka

发明人： Yuki Tsuda ,  Hideaki Masuoka

IPC分类号： H03L7/099 ,  H03L7/087 ,  H03B5/12 ,  H03C3/22

CPC分类号： H03L7/099 ,  H03L7/087 ,  H03L7/10

摘要： A digital PLL circuit includes: an oscillation circuit, wherein an oscillation frequency is controlled by changing the number of capacitance elements to be connected in parallel to an inductance element; and a phase comparator part configured to perform a digital phase comparison of a reference clock and a delayed clock thereof, with an oscillation circuit output; and based on the comparison result, to control the number of the capacitance elements so as to bring the phase of the oscillation circuit output closer to the reference clock phase, wherein the capacitance element includes: a coarse adjustment capacitor configured to have a predetermined capacitance; and fine adjustment capacitors configured to have a capacitance of 1/n of that of the coarse adjustment capacitor, wherein a predetermined number of the fine adjustment capacitors function as one coarse adjustment capacitor at the time of coarse adjustment.

摘要翻译： 数字PLL电路包括：振荡电路，其中通过将要并联的电容元件的数量改变为电感元件来控制振荡频率; 以及相位比较器部，被配置为利用振荡电路输出执行基准时钟及其延迟时钟的数字相位比较; 并且基于比较结果，控制电容元件的数量，使振荡电路的输出相位相对于基准时钟相位更接近，其中，电容元件包括：配置为具有预定电容的粗调电容器; 以及微调电容器，其被配置为具有所述粗调电容器的电容的1 / n的电容，其中预定数量的微调电容器在粗调时用作一个粗调电容器。

公开(公告)号：US08106719B2

公开(公告)日：2012-01-31

申请号：US12524098

申请日：2008-01-22

申请人： Kenichi Hosoya

发明人： Kenichi Hosoya

IPC分类号： H03C3/22 ,  H03B5/12

CPC分类号： H03L7/099 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1293 ,  H03L7/0807 ,  H03L7/0893 ,  H03L2207/06

摘要： A voltage-controlled oscillator is provided with inductor 7a arranged between a power supply and a ground; and a variable capacitive section 56 that configures a resonator circuit with inductor 7a. Variable capacitive section 56 is provided with first and second control terminals 1, 2 to which a voltage is applied to change the capacitance. Variable capacitive section 56 includes first variable capacitive element 9a wherein one terminal is connected to first control terminal 1 and the other terminal is connected to second control terminal 2; and second variable capacitive element 10a wherein one terminal is connected to second control terminal 2 and the other terminal is connected between the inductor and the ground.

摘要翻译： 压控振荡器设置有布置在电源和地之间的电感器7a; 以及用电感器7a构成谐振器电路的可变电容部分56。 可变电容部分56设置有施加电压以改变电容的第一和第二控制端子1,2。 可变电容部分56包括第一可变电容元件9a，其中一个端子连接到第一控制端子1，另一个端子连接到第二控制端子2; 以及第二可变电容元件10a，其中一个端子连接到第二控制端子2，另一个端子连接在电感器和地之间。

公开(公告)号：US07538630B2

公开(公告)日：2009-05-26

申请号：US11645794

申请日：2006-12-27

申请人： Toshimasa Numata ,  Alejandro Puel

发明人： Toshimasa Numata ,  Alejandro Puel

IPC分类号： H03C3/22 ,  H03K3/282

CPC分类号： H03B5/04 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/1243

摘要： The present invention is an oscillator including: a first resonance circuit including a first variable capacitance diode having a cathode connected to a control terminal, a first capacitor and a first inductor connected between an anode of the first variable capacitance diode and ground; a second resonance circuit including a second variable capacitance diode having a cathode connected to the control terminal, a second capacitor and a second inductor connected between an anode of the second variable capacitance diode and ground; and an oscillation circuit coupled to the first and second resonance circuits and outputting an oscillation output.

摘要翻译： 本发明是一种振荡器，包括：第一谐振电路，包括具有连接到控制端子的阴极的第一可变电容二极管，连接在第一可变电容二极管的阳极与地之间的第一电容器和第一电感器; 第二谐振电路，包括具有连接到控制端子的阴极的第二可变电容二极管，连接在第二可变电容二极管的阳极和地之间的第二电容器和第二电感器; 以及耦合到第一和第二谐振电路并输出振荡输出的振荡电路。

公开(公告)号：US20070030085A1

公开(公告)日：2007-02-08

申请号：US11277185

申请日：2006-03-22

申请人： Aaron Brennan ,  Mike McMenamy

发明人： Aaron Brennan ,  Mike McMenamy

IPC分类号： H03B5/12 ,  H03C3/22 ,  H03B5/18

CPC分类号： H03B5/36 ,  H03B5/06 ,  H03B5/368 ,  H03B2200/0046 ,  H03B2200/005 ,  H03B2200/0062 ,  H03B2200/0094 ,  H03L3/00 ,  H03L5/00

摘要： An oscillator circuit and system are provided having a peak detector that can determine a peak voltage value from the oscillator. The peak voltage value can then be compared against a predetermined voltage value by a controller coupled to the peak detector. The comparison value is then used to change a bias signal if the peak voltage value is dissimilar from the predetermined voltage value. A variable capacitor or varactor can be formed from a transistor and is coupled to the oscillator for receiving the bias signal upon a varactor bias node. The bias signal is used to regulate the capacitance within the varactor as applied to the oscillator nodes. Another controller can also be coupled to the peak detector to produce a second bias signal if the peak voltage is dissimilar from a second predetermined voltage value. The second bias signal can then be forwarded into an amplifier having a variable gain to regulate the gain applied to the oscillator. The combination of a varactor and variable gain amplifier regulate the negative resistance applied to the resonating circuit during startup and steady state operations to ensure a relatively fast startup, and to maintain optimal loading and accurate steady state amplitude after startup has completed.

摘要翻译： 提供具有能够确定振荡器的峰值电压值的峰值检测器的振荡器电路和系统。 然后可以通过耦合到峰值检测器的控制器将峰值电压值与预定电压值进行比较。 如果峰值电压值与预定电压值不相似，则比较值用于改变偏置信号。 可变电容器或变容二极管可以由晶体管形成，并且耦合到振荡器以在变容二极管偏置节点上接收偏置信号。 偏置信号用于调节应用于振荡器节点的变容二极管内的电容。 如果峰值电压与第二预定电压值不相似，另一个控制器也可耦合到峰值检测器以产生第二偏置信号。 然后可以将第二偏置信号转发到具有可变增益的放大器中，以调节施加到振荡器的增益。 变容二极管和可变增益放大器的组合调节在启动和稳态操作期间施加到谐振电路的负电阻，以确保启动相对较快，并且在启动完成后保持最佳负载和精确的稳态幅度。

公开(公告)号：US20050270114A1

公开(公告)日：2005-12-08

申请号：US10522395

申请日：2003-08-11

申请人： Takuo Hino

发明人： Takuo Hino

IPC分类号： H03B5/12 ,  H03C3/00 ,  H03C3/22 ,  H03L7/099 ,  H03B1/00

CPC分类号： H03L7/099 ,  H03B5/1215 ,  H03B5/1231 ,  H03B5/1243 ,  H03B5/1265 ,  H03B5/1293

摘要： There is provided a VCO having a modulation function capable of easily constituting a correction circuit which can obtain a predetermined modulation degree even when element irregularities are present. A modulation current terminal is connected to an anode side connection point of a first and a second varactor diode. A first resistor is connected between the connection point and an anode side connection point (grounding voltage) of a third and a fourth varactor diode. Voltage deciding the oscillation frequency is input from the voltage input terminal via the second resistor to the cathode side connection point of the first and the third varactor diode and via the third resistor to the cathode side connection point of the second and the fourth varactor diode. A first and a second capacitor are connected from a power source via a first and a second inductor to the cathode side of the first and the second varactor diode. Thus, it is possible to obtain a circuit having a frequency modulation degree expressed as a function of Kv.

摘要翻译： 提供一种VCO，其具有能够容易地构成校正电路的调制功能，即使存在元件不规则，其也可以获得预定的调制度。 调制电流端子连接到第一和第二变容二极管的阳极侧连接点。 第一电阻器连接在第三和第四变容二极管的连接点和阳极侧连接点（接地电压）之间。 决定振荡频率的电压通过第二电阻器从电压输入端子输入到第一和第三变容二极管的阴极侧连接点，并且经由第三电阻器输入到第二和第四变容二极管的阴极侧连接点。 第一和第二电容器通过第一和第二电感器从电源连接到第一和第二变容二极管的阴极侧。 因此，可以获得具有表示为Kv的函数的频率调制度的电路。

公开(公告)号：US5900788A

公开(公告)日：1999-05-04

申请号：US989084

申请日：1997-12-11

申请人： Frank Hagemeyer

发明人： Frank Hagemeyer

IPC分类号： H03B1/04 ,  H03B5/12 ,  H03C3/22

CPC分类号： H03B5/1231 ,  H03B5/1221 ,  H03B5/1243 ,  H03B5/1281 ,  H03B2200/004 ,  H03B2200/0088 ,  H03B2200/009 ,  H03B2202/012 ,  H03B2202/073 ,  H03C3/22

摘要： A low-noise oscillator circuit with an amplifier element for negative feedback, specifically a transistor. In addition to a positive feedback of the oscillator transistor, provision is made for a negative-feedback loop with a pass band of 0 (thus DC coupling) to 1/4 to 1/100 of the oscillation frequency of the oscillator, in order to regulate out fluctuations of the current of the amplifier element.

摘要翻译： 具有用于负反馈的放大器元件的低噪声振荡器电路，特别是晶体管。 除了振荡晶体管的正反馈之外，还提供了一个负通道环路，其通带为0（从而DC耦合）到+ E，fra 1/4 + EE至+ E，fra 1/100 + EE振荡器的振荡频率，以便调节放大器元件电流的波动。